Related

Based on Mark Seal’s book, the story follows Christian Karl Gerhartsreiter, an imposter who conned his way into various jobs on Wall Street — as well as a marriage — by posing as a member of the Rockefeller family. After entering rarefied social circles, his past finally caught up with him and he feared losing custody of his only daughter.

Cumberbatch is no stranger to portraying characters based on real people, having played mathematician Alan Turing in “The Imitation Game,” which landed him an Oscar nomination.